Biden claims momentum as Buttigieg drops out of race

Joe Biden said Sunday he can "unite this country, the whole country” after scoring a comeback victory in South Carolina’s Democratic primary that could force moderate rivals out of the race and blunt the rise of progressive leader Bernie Sanders.

De Blasio endorses former 2020 rival Sanders for president

New York City Mayor Bill de Blasio is endorsing Bernie Sanders for president, a move that puts de Blasio in a position to become a leading voice in opposition to Sanders' newest rival, Mike Bloomberg, his predecessor in leading the nation's largest city.

2020 Democrats step up attacks to blunt Bloomberg's rise

Democratic presidential candidates hoping to revive their flagging campaigns increasingly took aim at Mike Bloomberg on Thursday, blasting their billionaire rival for trying to buy his way into the White House and raising questions about his commitment to racial equality.